<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */

/**
 * Prepend the cache information to the cache file
 * and write it
 *
 * @param string $tpl_file
 * @param string $cache_id
 * @param string $compile_id
 * @param string $results
 * @return true|null
 */

// $tpl_file, $cache_id, $compile_id, $results


function smarty_core_write_cache_file($params, &$smarty) {
	
	// put timestamp in cache header
	$smarty->_cache_info ['timestamp'] = time ();
	if ($smarty->cache_lifetime > - 1) {
		// expiration set
		$smarty->_cache_info ['expires'] = $smarty->_cache_info ['timestamp'] + $smarty->cache_lifetime;
	} else {
		// cache will never expire
		$smarty->_cache_info ['expires'] = - 1;
	}
	
	// collapse nocache.../nocache-tags
	if (preg_match_all ( '!\{(/?)nocache\:[0-9a-f]{32}#\d+\}!', $params ['results'], $match, PREG_PATTERN_ORDER )) {
		// remove everything between every pair of outermost noache.../nocache-tags
		// and replace it by a single nocache-tag
		// this new nocache-tag will be replaced by dynamic contents in
		// smarty_core_process_compiled_includes() on a cache-read
		

		$match_count = count ( $match [0] );
		$results = preg_split ( '!(\{/?nocache\:[0-9a-f]{32}#\d+\})!', $params ['results'], - 1, PREG_SPLIT_DELIM_CAPTURE );
		
		$level = 0;
		$j = 0;
		for($i = 0, $results_count = count ( $results ); $i < $results_count && $j < $match_count; $i ++) {
			if ($results [$i] == $match [0] [$j]) {
				// nocache tag
				if ($match [1] [$j]) { // closing tag
					$level --;
					unset ( $results [$i] );
				} else { // opening tag
					if ($level ++ > 0)
						unset ( $results [$i] );
				}
				$j ++;
			} elseif ($level > 0) {
				unset ( $results [$i] );
			}
		}
		$params ['results'] = implode ( '', $results );
	}
	$smarty->_cache_info ['cache_serials'] = $smarty->_cache_serials;
	
	// prepend the cache header info into cache file
	$_cache_info = serialize ( $smarty->_cache_info );
	$params ['results'] = strlen ( $_cache_info ) . "\n" . $_cache_info . $params ['results'];
	
	if (! empty ( $smarty->cache_handler_func )) {
		// use cache_handler function
		call_user_func_array ( $smarty->cache_handler_func, array ('write', &$smarty, &$params ['results'], $params ['tpl_file'], $params ['cache_id'], $params ['compile_id'], null ) );
	} else {
		// use local cache file
		

		if (! @is_writable ( $smarty->cache_dir )) {
			// cache_dir not writable, see if it exists
			if (! @is_dir ( $smarty->cache_dir )) {
				$smarty->trigger_error ( 'the $cache_dir \'' . $smarty->cache_dir . '\' does not exist, or is not a directory.', E_USER_ERROR );
				return false;
			}
			$smarty->trigger_error ( 'unable to write to $cache_dir \'' . realpath ( $smarty->cache_dir ) . '\'. Be sure $cache_dir is writable by the web server user.', E_USER_ERROR );
			return false;
		}
		
		$_auto_id = $smarty->_get_auto_id ( $params ['cache_id'], $params ['compile_id'] );
		$_cache_file = $smarty->_get_auto_filename ( $smarty->cache_dir, $params ['tpl_file'], $_auto_id );
		$_params = array ('filename' => $_cache_file, 'contents' => $params ['results'], 'create_dirs' => true );
		require_once (SMARTY_CORE_DIR . 'core.write_file.php');
		smarty_core_write_file ( $_params, $smarty );
		return true;
	}
}

/* vim: set expandtab: */

?>
